Rainbow-electronics ATmega64L Uživatelský manuál stáhnout pdf (Strana 29)

100

101

ATmega16(L)

2466B–09/01

When this clock source is selected, start-up times are determined by the SUT fuses as

shown in Table 12.

Timer/Counter Oscillator For AVR microcontrollers with Timer/Counter Oscillator pins (TOSC1 and TOSC2), the

crystal is connected directly between the pins. No external capacitors are needed. The

oscillator is optimized for use with a 32.768 kHz watch crystal. Applying an external

clock source to TOSC1 is not recommended.

Table 12. Start-up Times for the External Clock Selection

SUT1..0

Start-up Time from

Power-down and

Power-save

Additional Delay

from Reset

= 5.0V) Recommended Usage

00 6 CK – BOD enabled

01 6 CK 4 ms Fast rising power

10 6 CK 64 ms Slowly rising power

11 Reserved

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 297 298

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